摘要:
For an inkjet printhead (10) having at least one nozzle (24) with heater elements (28a, 28b) predisposed to direct the flow of ink drops (37) through the nozzle (24), a system and method of compensating for the effects of defects in the inkjet printhead (10) to permit compensation in the direction of ink drops (37) ejected from the nozzle (24). A thickness is then added to one or more heating elements (28a, 28b) of the inkjet printhead (10), such thickness calculated to compensate for the misdirection. The heater elements (28a, 28b) are immersed in a electroplating solution (42) and a voltage differential (40) applied to cause the electroplating solution (42) to form a electroplated coating (44) which acts to compensate for a misdirection of ink stream flow (36) out through at least one of the nozzles (24).
摘要:
A method for forming an ink jet nozzle plate includes providing a structure having a top substrate layer, a bottom substrate layer, and a buried layer disposed between the top substrate layer and the bottom substrate layer; providing a composite mask over the top substrate layer having a cavity mask which provides openings and a bore mask having openings which are entirely within the openings of the cavity mask and extend to the top substrate layer; anisotopically etching through the bore mask openings through top substrate layer and the buried layer into a portion of the bottom substrate layer; removing the bore mask and etching the top and bottom substrate layers without substantially affecting the buried layer to extend the openings in the top substrate layer and the bottom substrate layer; removing the cavity mask and attaching the top substrate layer to a base provided with ink delivery channels with correspond to the openings in the buried layer; and removing the bottom substrate layer.
摘要:
An image forming method including a print head having plurality of micromachined ink channel pistons, and method of assembling the method and print head. The method comprises a piston for pressurizing an ink body so that an ink meniscus extends from the ink body. An ink droplet separator is also provided for lowering surface tension of the meniscus as the meniscus extends from the ink body. The extended meniscus severs from the ink body to form an ink droplet as the droplet separator lowers the surface tension to a predetermined value.
摘要:
To compensate for droplet placement errors, a continuous ink jet printer includes a heater having a plurality of selectively independently actuated sections which are positioned along respectively different portions of the nozzle bore's perimeter. An actuator selectively activates none, one, or a plurality of the heater sections such that: actuation of heater sections associated with only a portion of the entire nozzle bore perimeter produces an asymmetric application of heat to the stream to control the direction of the stream between a print direction and a non-print direction, and simultaneous actuation of different numbers of heater sections associated with only a portion of the entire nozzle bore perimeter produces corresponding different asymmetric application of heat to the stream to thereby control the direction of the stream between one print direction and another print direction.
摘要:
Multi-fluidic cleaning for an ink jet print head (10) and a method for assembling the same. The print head (10) has a surface (14) defining at least one orifice (16) therethrough, the at least one orifice (16) being susceptible to being obstructed by contaminants. A cleaning assembly (22) of the invention is disposed proximate the surface (14) for directing a flow of fluid along the surface (14) and across the at least one orifice (16) to clean contaminants from the surface (14) and the at least one orifice (16). The cleaning assembly (22) includes a cup (24) sealingly surrounding the at least one orifice (16), the cup (24) defining a cavity (26) therein. The cleaning assembly (22) further includes a valve system (32) in fluid communication with the cavity (26) for allowing a fluid flow stream (44) consisting of alternating segments (46,48,50) of at least one liquid cleaning agent from a liquid cleaning agent source (40,42) and another element such as a gas from a gas source (38) or a second liquid cleaning agent from a liquid cleaning agent source (40,42) into the cavity (26).
摘要:
An electronic camera for producing a digital image and a multimode microfluidic printing device for printing such digital image including a parallel associative interface structure having an image sensor in the camera for producing digital images and a microfluidic printing device including a plurality of colored ink reservoirs including several reservoirs for containing different colorants and a plurality of colorant delivery chambers. Circuitry responds to digital image produced by the sensor for image processing the digital image produced by the image sensor for controlling the microfluidic printing device to deliver colorants from the delivery chambers to an image transfer position. An image receiving medium is delivered to such medium to produce a visual image of the digital image.
摘要:
Apparatus is disclosed for controlling ink in a continuous ink jet printer in which a continuous stream of ink is emitted from a nozzle, wherein an ink stream generator establishes a continuous flow of ink in a stream such that the stream breaks up into a plurality of droplets at a position spaced from the ink stream generator. A stream deflector includes a body having a surface positioned adjacent to the stream between the ink stream generator and the position whereat the stream breaks up into droplets such that the stream contacts the surface and is deflected at least in part due to a tendency of liquid to contact a surface in proportion to liquid-solid free energy. The stream may be deflected substantially totally due to a tendency of liquid to contact a surface in proportion to liquid-solid free energy, or may be deflected partially due to a tendency of liquid to contact a surface in proportion to liquid-solid free energy and partially due to a reactive force on the stream exerted by the surface as a result of collision of the stream with the surface.
摘要:
A methodology for producing an edge aligned implant beneath an electrode with reduced lateral spread, comprising the steps of: providing a dielectric layer on a substrate; forming an etch-stop layer on the dielectric layer; forming a sacrificial material layer on the etch-stop layer; patterning the sacrificial layer with openings to expose the etch-stop layer and which openings corresponding to gate electrode positions; implanting dopant atoms through the opening into the substrate in regions adjacent to at least one edge of the opening in the sacrificial layer; depositing electrode material into the openings and onto the sacrificial layer; forming an electrode layer, either by itself of with another layer deposited or grown over it to allow alteration to provide an etch rate differential. The material that etches relatively slowly becomes or protects the gate electrode region. The alteration is done by a process such as diffusion or irradiation.
摘要:
A fully self-aligned, charge coupled device (CCD) comprises a semiconductor substrate having implanted barrier and/or storage regions, an insulating dielectric layer disposed over the substrate, a first layer of closely spaced electrodes in self-alignment with at least one implant underneath the first electrodes, a second layer of closely spaced electrodes in self-alignment with the first electrodes and with at least one implant underneath the second electrodes also in self-alignment with the first electrodes. The process for fabricating the fully self-aligned CCD comprises the steps of first forming upon the semiconductive substrate, a uniform insulating dielectric layer; then forming a sacrificial layer upon the dielectric layer, the sacrificial layer patterned by removal of selected portions of the layer, at least one edge of the patterned sacrificial layer serving as a mask for ion implantation into the semiconductor substrate, the mask optionally comprising also photoresist; then forming in only those regions in which the sacrificial layer was removed, a first gate electrode; then removing the sacrificial layer, thereby exposing the sidewalls of the closely spaced first gate electrode, at least one of the sidewalls serving as a mask for a second ion implantation into the semiconductor substrate, the mask optionally comprising also photoresist; then forming a first oxide layer over the exposed surface of the first gate electrode; then depositing and patterning a second gate electrode layer to form a second gate electrode disposed between portions of the first gate electrode.
摘要:
A method of making a fully self-aligned, planar, two phase charge coupled device comprises the steps of first forming upon a semiconductive substrate a uniform first insulative dielectric layer; then depositing and patterning in the form of a trench extending to the first insulative layer a second insulative layer; then implanting ions of a second conductivity type into the substrate, then patterning closely spaced strips of a first conductive layer on the first and second insulative layer, then further implanting ions of a second conductivity type in the regions between said first conductive strips, then depositing uniformly a second conductive layer electrically isolated from the first conductive strips, then entirely removing by uniform planarization those portions of the second conductive layer disposed over regions of the first conductive strips or over regions of the second insulative layer so as to form closely spaced, coplanar, alternating first and second electrically isolated conductive strips, then electrically connecting alternate pairs of strips by a planar process of depositing and oxidizing a conductive material, then removing portions of the second insulative layer.